A chemist observes progress of a distillation operation at the Experimental Station. When cooled with liquid air, many gases are converted to liquids which are then distilled in this low temperature still, like water or other ordinary liquids.

Table of Contents: A year of progress; Lindbergh's Lockheed Sirius; Detective stories or pure knowledge; Duco in Japan; Trains in colors; The iron ore industry of the lake superior district; Builders of good will; Color goes into the movies;...

Text from image: "Are You Afraid of Criticism? Some workers are so easily offended, that to criticise their work -- Means Trouble. Therefore nobody criticises, nobody suggests, nobody helps them, and so they never progress. Everybody must learn...